package cn.ither.esjd.utils;

import cn.ither.esjd.pojo.Content;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

/**
 * @Author: zhanghuan
 * @date: 2020/9/28 15:03
 * @description:
 */

@Component
public class HtmlParseUtil {
    public static List<Content> praseJD(String keywords) throws IOException {
        //获取请求    https://search.jd.com/Search?keyword=java
        //前提，需要联网，
        String url = "https://search.jd.com/Search?keyword="+keywords;
        //解析网页(jsoup返回的Document就是浏览器的Document对象）
        Document document = Jsoup.parse(new URL(url), 3000);
        //所有在js中的方法这里都可以使用
        Element element = document.getElementById("J_goodsList");
//        System.out.println(element.html());
        //获取所有的li元素
        Elements elements = element.getElementsByTag("li");
        ArrayList<Content> goodList = new ArrayList<>();
        //获取元素里面的内容
        for (Element el:elements){
            String img = el.getElementsByTag("img").eq(0).attr("data-lazy-img");
            String price = el.getElementsByClass("p-price").eq(0).text();
            String title = el.getElementsByClass("p-name").eq(0).text();
            Content content = new Content();
            content.setTitle(title);
            content.setPrice(price);
            content.setImg(img);
            goodList.add(content);
        }
        return goodList;
    }
}
